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问题 选择题

下列操作与消毒灭菌无关的是[ ]

A．接种前用肥皂洗双手，再用酒精擦拭双手

B．接种前用火焰灼烧接种环(针)

C．培养基在50℃左右时搁置斜面

D．接种时在酒精灯的火焰旁完成

答案

答案：C

填空题

根据所给汉语提示完成句子。

1. It's hard for the old villagers _____ (谋生) in big cities.

2. They stayed at home _____ (一直) because of the heavy rain,

3. The boy practiced basketball very hard _____ (为了) become a professional basketball player.

4. Many athletes _____ (捐钱给慈善机构) to help poor people.

5. If you don't work hard now, you'll never _____ (上大学).
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单项选择题 A1/A2型题

鼻咽癌侵犯颅内常经（）。

A.圆孔

B.卵圆孔

C.破裂孔

D.蝶腭孔

E.眶下裂
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